R94.4 is the authoritative medical code for Abnormal results of kidney function studies. This classification is used in medical billing and clinical recording to specify the clinical criteria for abnormal results of kidney function studies (ICD-10-CM R94.4), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Abnormal results of kidney function studies is a billable ICD-10-CM diagnosis code R94.4. Includes: abnormal results of radionuclide radioisotope uptake studies; abnormal results of scintigraphy; nonspecific abnormal findings on diagnostic imaging by computerized axial tomography CAT scan; nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging MRINMR; nonspecific abnormal findings on diagnostic imaging by positron emission tomography PET scan; nonspecific abnormal findings on diagnostic imaging by thermography; nonspecific abnormal findings on diagnostic imaging by ultrasound echogram; nonspecific abnormal findings on diagnostic imaging by X-ray examination. Inclusion terms: Abnormal renal function test. Excludes1 (not coded here): abnormal findings on antenatal screening of mother O28.-; diagnostic abnormal findings classified elsewhere - see Alphabetical Index.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for R94.4 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- abnormal results of radionuclide radioisotope uptake studies
- abnormal results of scintigraphy
- nonspecific abnormal findings on diagnostic imaging by computerized axial tomography CAT scan
- nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging MRINMR
- nonspecific abnormal findings on diagnostic imaging by positron emission tomography PET scan
- nonspecific abnormal findings on diagnostic imaging by thermography
- nonspecific abnormal findings on diagnostic imaging by ultrasound echogram
- nonspecific abnormal findings on diagnostic imaging by X-ray examination
Inclusion Terms
Alternative terms the tabular list files under this code.
- Abnormal renal function test
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- abnormal findings on antenatal screening of mother O28.-
- diagnostic abnormal findings classified elsewhere - see Alphabetical Index
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with R94.4?
Per official ICD-10-CM Excludes1 instructions, R94.4 must not be reported together with: abnormal findings on antenatal screening of mother (O28.-); diagnostic abnormal findings classified elsewhere - see Alphabetical Index.
What conditions are included under R94.4?
Abnormal results of kidney function studies includes: Abnormal renal function test.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to R94.4 in its code family, with their registry titles.
- R94 — Abnormal results of function studies
- R94.0 — Abnormal results of function studies of central nervous system
- R94.01 — Abnormal electroencephalogram [EEG]
- R94.02 — Abnormal brain scan
- R94.09 — Abnormal results of other function studies of central nervous system
- R94.1 — Abnormal results of function studies of peripheral nervous system and special senses
- R94.11 — Abnormal results of function studies of eye
- R94.110 — Abnormal electro-oculogram [EOG]
- R94.111 — Abnormal electroretinogram [ERG]
- R94.112 — Abnormal visually evoked potential [VEP]
View all 29 codes in the R94 family
Indexed Clinical Terms (8)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Abnormal, abnormality, abnormalities, creatinine clearance
- Abnormal, abnormality, abnormalities, function studies, kidney
- Abnormal, abnormality, abnormalities, kidney function test
- Abnormal, abnormality, abnormalities, renal function test
- Abnormal, abnormality, abnormalities, scan, kidney
- Findings, abnormal, inconclusive, without diagnosis, creatinine clearance
- Findings, abnormal, inconclusive, without diagnosis, function study NEC, kidney
- Findings, abnormal, inconclusive, without diagnosis, scan NEC, kidney